This is how to program your Chevrolet Trailblazer 2002, 2003, 2004, 2005, 2006, 2007, 2008, or 2009 replacement remote keyless entry fob alarm by yourself at home without going to the dealer.
There is also a free programming tutorial video below to show you how easy it is done.
Obtain all remote transmitters.
Close all doors.
Insert key into ignition, do not turn ignition switch.
Press and hold door lock switch in the unlock position.
Switch ignition ON, OFF, ON, OFF.
Release door lock switch.
Doors will lock and unlock, indicating programming mode activated.
To program remote transmitter proceed as follows:
Simultaneously press and hold transmitter LOCK and UNLOCK buttons.
Doors will lock and unlock, indicating remote transmitter programmed.
Repeat above procedure for each remote transmitter.
Switch ignition ON to exit programming mode.
NOTE: Existing remote transmitter memory positions will be overwritten.
NOTE: A maximum of 4 remote transmitters can be programmed.

This is how to program your 1999, 2000, 2001, 2002, 2003 and 2004 Chevy Tracker replacement remote keyless entry fob alarm by yourself at home without going to the dealer.
IMPORTANT: Before entering programming mode, have in possession all of the transmitters you will be using on the vehicle. Once you program the transmitter, all previous codes will be erased from the memory. The other transmitters will not be functional until you program the transmitters again.

1. Locate the Data Line Connector (DLC) underneath the driver’s side dashboard. Use the figure below as a map for your DLC (they usually aren’t numbered). The view in the picture below is looking straight into the cavities of the DLC. Notice how the DLC is tapered on both ends; we will be working on the wider row of cavities (1 through 8 in the figure below).
Use a jumper wire
to connect pins 4 & 8

2. Make sure there are metal contact pins in terminals 8 and 4 and connect the Data Line Connector (DLC) terminal 8 to terminal 4 with a suitable jumper wire (you can use a piece of thin electrical cable, speaker cable or simply U shaped paper clip; leave the jumper wire connected throughout the programming procedure). Make sure you know which terminals are 8 and 4. The vehicle will respond by cycling the locks (locking then unlocking doors) to signify entering of programming mode.
Figure a. Data link connector
3. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to be programmed. After about 15 seconds, the vehicle will respond by cycling the locks (locking then unlocking doors). Release the buttons on the transmitter.
4. Within one minute, repeat the previous step on the remaining transmitters to be programmed.
5. Remove jumper wire applied to the DLC (disconnect terminals 8 and 4).

This is how to program your remote keyless entry fob for the 1997, 1998, 1999 and 2000 (old body style) Chevy Tahoe

IMPORTANT: Before entering programming mode, have in possession all of the transmitters you will be using on the vehicle. Once you program the transmitter, all previous codes will be erased from the memory. The other transmitters will not be functional until you program the transmitters again.

1. Locate the Data Line Connector (DLC) underneath the driver’s side dashboard. Use the figure below as a map for your DLC (they usually aren’t numbered). The view in the picture below is looking straight into the cavities of the DLC. Notice how the DLC is tapered on both ends; we will be working on the wider row of cavities (1 through 8 in the figure below).
Use a jumper wire
to connect pins 4 & 8

2. Make sure there are metal contact pins in terminals 8 and 4 and connect the Data Line Connector (DLC) terminal 8 to terminal 4 with a suitable jumper wire (you can use a piece of thin electrical cable, speaker cable or simply U shaped paper clip; leave the jumper wire connected throughout the programming procedure). Make sure you know which terminals are 8 and 4. The vehicle will respond by cycling the locks (locking then unlocking doors) to signify entering of programming mode.
Figure a. Data link connector
3. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to be programmed. After about 15 seconds, the vehicle will respond by cycling the locks (locking then unlocking doors). Release the buttons on the transmitter.
4. Within one minute, repeat the previous step on the remaining transmitters to be programmed.
5. Remove jumper wire applied to the DLC (disconnect terminals 8 and 4).

This is how to program your 1998, 1999, 2000, 2001, 2002, 2003 and 2004 Chevy S-10 keyless entry remote fob by yourself at home without going to the dealer.
There is also a free programming tutorial video below to show you how easy it is done.
Obtain all remote transmitters.
Close all doors.
Insert key into ignition, do not turn ignition switch.
Press and hold door lock switch in the unlock position.
Switch ignition ON, OFF, ON, OFF.
Release door lock switch.
Doors will lock and unlock, indicating programming mode activated.
To program remote transmitter proceed as follows:
Simultaneously press and hold transmitter LOCK and UNLOCK buttons.
Doors will lock and unlock, indicating remote transmitter programmed.
Repeat above procedure for each remote transmitter.
Switch ignition ON to exit programming mode.
NOTE: Existing remote transmitter memory positions will be overwritten.
NOTE: A maximum of 4 remote transmitters can be programmed.

This is how to program your 1997 Chevy S-10 keyless entry remote fob by yourself at home without going to the dealer.
IMPORTANT: Before entering programming mode, have in possession all of the transmitters you will be using on the vehicle. Once you program the transmitter, all previous codes will be erased from the memory. The other transmitters will not be functional until you program the transmitters again.

1. Locate the Data Line Connector (DLC) underneath the driver’s side dashboard. Use the figure below as a map for your DLC (they usually aren’t numbered). The view in the picture below is looking straight into the cavities of the DLC. Notice how the DLC is tapered on both ends; we will be working on the wider row of cavities (1 through 8 in the figure below).
Use a jumper wire
to connect pins 4 & 8
2. Make sure there are metal contact pins in terminals 8 and 4 and connect the Data Line Connector (DLC) terminal 8 to terminal 4 with a suitable jumper wire (leave the jumper wire connected throughout the programming procedure). Make sure you know which terminals are 8 and 4. The vehicle will respond by cycling the locks (locking then unlocking doors) to signify entering of programming mode.
Figure a. Data link connector
3. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to be programmed. After about 15 seconds, the vehicle will respond by cycling the locks (locking then unlocking doors). Release the buttons on the transmitter.
4. Within one minute, repeat the previous step on the remaining transmitters to be programmed.
5. Remove jumper wire applied to the DLC (disconnect terminals 8 and 4).

Unfortunately, there are no do it yourself instructions that will work to program the 2011, 2012, 2013 or 2014 Chevy Suburban key less entry remote fobs.
This remote must be programmed by a Chevy/GM dealer or a professional automotive locksmith.

This is how to program your 2007, 2008. 2009 and 2010 Chevy Suburban keyless entry remote fob by yourself at home without going to the dealer.
There is also a free programming tutorial video below to show you how easy it is done.
Switch ignition ON.
Repeatedly press vehicle information button Fig. 2 [A] until PRESS TO RELEARN REMOTE KEY is displayed.
Press set/reset button Fig. 2 [B] until REMOTE KEY LEARNING ACTIVE is displayed.
Programming mode activated, proceed as follows:
Press and hold LOCK and UNLOCK buttons on first remote transmitter simultaneously for 15 seconds.
Wait for acoustic signal (indicates correct programming).
Repeat above procedure to program remaining remote transmitters.
Switch ignition OFF to exit programming mode.
Remote transmitters can also be programmed using diagnostic equipment.
NOTE: A maximum of 8 remote transmitters can be programmed.

This is how to program your 2000, 2001, 2002, 2003, 2004, 2005, and 2006 Chevy Suburban keyless entry remote fob by yourself at home without going to the dealer.
There is also a free programming tutorial video below to show you how easy it is done.
Obtain all remote transmitters.
Close all doors.
Insert key into ignition, do not turn ignition switch.
Press and hold door lock switch in the unlock position.
Switch ignition ON, OFF, ON, OFF.
Release door lock switch.
Doors will lock and unlock, indicating programming mode activated.
To program remote transmitter proceed as follows:
Simultaneously press and hold transmitter LOCK and UNLOCK buttons.
Doors will lock and unlock, indicating remote transmitter programmed.
Repeat above procedure for each remote transmitter.
Switch ignition ON to exit programming mode.
NOTE: Existing remote transmitter memory positions will be overwritten.
NOTE: A maximum of 4 remote transmitters can be programmed.